GRE Reading Comprehension: Maggoosh-GRE阅读Maggoosh - JIPHP1ESB_L5E5QCM

The primary purpose of the passage is to A. discredit the findings of a study due to flaws in the design of the study B. point out a factor that may modify the extent of certain findings C. show how results in a finding were unintentionally fabricated D. bolster an argument concerning the interaction of learning and caffeine intake E. expand on several oversights of a noteworthy study